do cleanup on AfterAll, then make postcondition assertion

Author: andrewazores

src/test/java/itest/bases/StandardSelfTest.java

@@ -61,10 +61,8 @@ public static void assertPreconditions() throws Exception {
     }
 
     @AfterAll
-    public static void assertPostconditions() throws Exception {
-        // give the server some additional time to ensure individual tests' cleanup has completed,
-        // then make assertions about the cleaned state
-        Thread.sleep(1_000);
+    public static void postCleanup() throws Exception {
+        cleanupSelfActiveAndArchivedRecordings();
         assertNoRecordings();
     }